Affiliate disclosure: This page contains affiliate links. We may earn a commission if you use them, at no extra cost to you. Our editorial recommendations are independent of these relationships.
New Mexico County
Harding County, New Mexico
The Canadian River Breaks and one of America's emptiest counties - from Harding County's extraordinary isolation (with fewer than 700 residents in 2,125 square miles, Harding County is one of the least populated counties in the contiguous United States - the Canadian River's dramatic mesa and canyon landscape cuts through the northeast New Mexico high plains in a geologically spectacular terrain of red rock breaks, mesas, and grasslands that sees almost no visitors and supports a handful of ranching families whose isolation defines the last remnant of the genuinely empty West) and the Kiowa National Grassland's Harding County presence.
Affiliate disclosure: This page contains affiliate links. We may earn a commission if you use them, at no extra cost to you. Our editorial recommendations are independent of these relationships.
What do you need to do?
Tell us your goal and we'll guide you step-by-step to the right office, forms, and official resources.
Office: Harding County Emergency Management – 35 Pine St, PO Box 1002, Mosquero, NM 87733; Emergency Manager Victoria Villarreal, (575) 673-2927 | Cell: (575) 512-6319.
Sheriff: Harding County Sheriff’s Office – 35 Pine Street, Mosquero, NM 87733 | (575) 673-2231 | Fax: (575) 673-2233; Sheriff Pedro L. Bolin, [email protected]. Central Dispatch: (575) 461-2280. Offers OffenderWatch sex offender registry.
Notes: For an active emergency, call 911.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: NM-39 and NM-120 serve Mosquero, the county seat, in far northeastern New Mexico; Roy is the county’s largest village.
Notes: Harding County holds a genuinely unique distinction: it was created on March 4, 1921 – the exact day of President Warren G. Harding’s inauguration – from parts of Union and Mora counties, making Harding the most recent U.S. president to have a county named after him anywhere in the nation. It is New Mexico’s least populous county (roughly 617-657 residents), down from a peak of about 5,000 in 1930, largely due to the Great Depression and Dust Bowl.
Business & Permits
BUILDING & PERMITS
Office: Harding County Courthouse – 35 Pine Street, Mosquero, NM 87733 | (575) 673-2926 (Assessor) | (575) 673-2301 (Clerk); genuinely NRHP-listed (1987), built 1922 in Greek Revival style.
Notes: Mosquero’s name genuinely derives from the Spanish word for “swarm of flies” – drawn to buffalo carcasses once hunted by tribal peoples in the area. The county is home to dinosaur tracks starting at Mosquero Creek and stretching north into Colorado, and part of the Kiowa National Grasslands.
Veterans Services
VETERANS SERVICES
Office: Harding County Veterans Service – confirm current contact via hardingcounty.org.
Federal: Albuquerque VA Medical Center (long distance).
Libraries
LIBRARIES
Confirm current library address/hours via hardingcounty.org.
Parks & Recreation
PARKS & RECREATION
Key Assets: The Canadian River Canyon, Kiowa National Grasslands, and dinosaur tracks along Mosquero Creek are the county’s premier attractions.
Notes: The genuine “born on inauguration day” naming story and the county’s status as New Mexico’s least populous county are distinctive local facts.
GIS & Maps
GIS & MAPS
Appraisal/Parcel Search: Harding County Assessor – 35 Pine Street, Mosquero, NM 87733 | (575) 673-2926.
Animal Services
ANIMAL SERVICES
No dedicated county animal shelter was confirmed in this search – Harding is New Mexico’s least populous county; animal-related concerns likely route through the Sheriff’s Office. Confirm directly via hardingcounty.org.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Office: Harding County Road Department – (575) 673-2313. Harding County Extension Agent – (575) 673-2341.
NOTES: Harding County is the twelfth county in the New Mexico v3 A+ sourced redo’s second batch (Doña Ana, Eddy, Grant, Guadalupe, Harding, Hidalgo, Lea). The genuine story of the county’s creation on President Harding’s inauguration day, and its status as New Mexico’s least populous county, are distinctive local facts. All contact information above was sourced via web search as of early August 2026 and should be reconfirmed directly with the relevant office before a visit, deadline-sensitive filing, or emergency-adjacent decision.
About Harding County
Harding County is one of the emptiest counties in America – fewer than 700 people in over 2,000 square miles of Canadian River breaks and mesa grassland make it the ultimate expression of the genuinely empty American West, where the isolation is total and the landscape is spectacular.
Mosquero (the county seat, population ~90) is one of the smallest county seats in the United States – a tiny community serving the vast ranching territory of northeast New Mexico’s Canadian River breaks.
All Services
Browse every category and topic available for this county.
Harding County Assessor at 35 Pine Street, Mosquero, NM 87733, phone 575-673-2231. NM assessed at one-third of market value.
Courts & Legal
Harding County District Court at 35 Pine Street, Mosquero, NM 87733, phone 575-673-2231, handles probate.
Marriage & Vital Records
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
COUNTY CLERK
35 Pine St., Mosquero, NM 88415
(575) 673-2231
COUNTY CLERK — ELECTIONS
35 Pine St., Mosquero, NM 88415
(575) 673-2231
Genealogy
PRIMARY STATEWIDE RESEARCH CENTERS (same across all New Mexico counties)
New Mexico State Records Center and Archives, 1205 Camino Carlos Rey, Santa Fe, NM 87507.
New Mexico Genealogical Society, P.O. Box 8283, Albuquerque, NM 87198.
County-level record sources
Harding County Probate Court, Mosquero (probate case files – see Probate section above).
Local societies
No dedicated Harding County genealogical society was confirmed in available directories.
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Where to go
Harding County Probate Court 35 Pine Street, Mosquero, NM 87733 (575) 673-2302
Harding County is in northeastern New Mexico, New Mexico’s least populous county, seated in Mosquero.
Step 1: figure out which path applies
New Mexico adopted the Uniform Probate Code. New Mexico has a dual court system: the county PROBATE COURT handles informal, uncontested probate matters with minimal court involvement, and has concurrent jurisdiction with the DISTRICT COURT over informal proceedings. The District Court alone handles formal probate – contested cases, determinations of heirship, and trust matters.
Small Estate Affidavit / Affidavit of Successor in Interest (N.M. Stat. § 45-3-1201) – available when the value of the entire estate (after liens and encumbrances) does not exceed $50,000 and does NOT include any real property. At least 30 days must have passed since death. This skips probate court entirely – the affidavit is presented directly to banks, the DMV, or other institutions holding the property.
Homestead Transfer Affidavit for Surviving Spouse (N.M. Stat. § 45-3-1205) – available 6 months after death, when the surviving spouse and decedent owned a homestead as community property valued at $500,000 or less (for property tax purposes). The affidavit is recorded with the county clerk and can avoid formal probate for the residence, but only if funeral expenses, expenses of last illness, and all unsecured debts have already been paid.
Informal Probate – the most common path for uncontested estates, filed with either the Probate Court or the District Court in the county where the decedent was domiciled. No hearing required.
Formal Probate – required for contested cases, disputes over heirship, or trust matters. Only the District Court can hear these.
Step 2: filing for informal or formal probate
File a petition with the Probate Court or District Court in the county where the decedent was domiciled. A probate may be started up to 3 years after death.
The court appoints the personal representative and issues Letters Testamentary or Letters of Administration.
The personal representative notifies creditors; New Mexico’s creditor claim period is 2 months from notice to creditors – one of the shortest in the country.
The personal representative inventories the estate’s assets, pays debts and expenses, and distributes the remaining assets according to the will or New Mexico’s intestacy statute.
The estate is closed, typically within 6 to 12 months for straightforward, uncontested cases.
What it costs
The filing fee for probate in Probate Court is generally around $30 – notably lower than in most states. District Court filing fees run higher, commonly $100–$232 depending on the county and complexity.
New Mexico does not set a fixed statutory percentage for personal representative compensation; courts typically look to a reasonable guideline of about 2–4% of the estate’s value.
New Mexico has no state estate tax and no state inheritance tax. Only the federal estate tax could apply, and only to very large estates.
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
35 Pine St., Mosquero, NM 88415
(575) 673-2231
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
COUNTY CLERK — ELECTIONS
35 Pine St., Mosquero, NM 88415
(575) 673-2231
ELECTIONS
35 Pine St., Mosquero, NM 88415
(575) 673-2231
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
NM HSD — Harding
hsd.state.nm.us
Public Health Information
PUBLIC HEALTH
Office: Harding County Senior Centers – Homesteader Senior Center (Mosquero), (575) 673-2310; Roy Senior Center, (575) 485-2639.
Editorial independence: CountyOffices maintains strict editorial independence from our affiliate partners. Our content is researched from official government sources. Affiliate relationships do not influence our recommendations or the information we publish.
Editorial Trust
5 official sources cited
Reviewed by CountyOffices Editorial Team
Last verified June 2026
County Facts
County Seat: Mosquero
Population: 650
Area: 2,125 sq mi
Established: 1921
Tier: 3
Public Records
TruthFinder
Search public records for Harding County residents.
